P: Clipping mask to a Layer group?

What you are showing, Marc are Layer Masks and Vector Masks.
Clipping masks are useful (for instance) to apply an image/texture on a text layer: set your text layer, place a layer with an image/texture on top then alt+Click between them. (Now, I'm sure you know about that feature, you just made a request regarding them...)
http://help.adobe.com/en_US/photoshop...

Joshua: in the meantime, convert your group to a smart object, and you'll be able to clip it.

No Marc... are you aware of what clipping masks are?
They are layers that are 'clipped' to a layer beneath it. The layers that are 'clipped' only reveal their contents based on the visible contents of the layer they are clipped to.
I often complicate the matter by masking both the bottom layer and adding masks to the layers that are clipped to it.
It would be great to have a set/group/folder, and be able to clip to only the visible contents of the folder.
It is probably too complex for programming sake... but again, every day or so i run into a situation where i say 'i wish that clipping to a group was possible' ...

This is a screen shot of what a 'clipped' adjustment layer looks like.

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Joshua and David: I'm still not sure what you're after. Here's a screenshot of Photoshop CS5 with a bitmap and vector mask on a group. This isn't what you want?

Image is not available

Try creating a clipping mask to an entire group of layers. you can't do it. Yes, you can do it to one layer below, and add more clipping layers as necessary. But if the layers are in a set/folder/group, it would be amazing to clip an adj layer to the entire folder. I do LOTS of heavy compositing in photoshop. I work on the app about 8 hours a day, 5+ days a week. I've often wished for this feature.

I'm still lost on what's being asked.

It's possible to group an adjustment layer to the layer below (using "Create Clipping Mask"), so I'm guessing something else is being asked?

Yes David. Thanks for clearing that up. It is labeled as 'Create Clipping Mask' under the layers menu.

He is referring to how you can set a layer to only effect the layer below it by alt-clicking between the layers.

You can add a clipping mask (either bitmap or vector) to a group. Is that what you're after? Or am I missing something?